Analog Devices Inc. AD9023BQ

Overview

AD9023BQ from Analog Devices is a 12-bit, 20 MSPS monolithic analog-to-digital converter with on-chip track-and-hold (T/H), internal ±1.024 V reference, ECL-compatible digital I/O, and 110 MHz analog input bandwidth. It delivers 74 dB spurious-free dynamic range at 1.2 MHz input and 65 dB SNR, targeting undersampling applications such as direct IF digitization in radar receivers and digital communications systems.

For engineers reviewing the AD9023BQ datasheet, AD9023BQ pinout, AD9023BQ application, or AD9023BQ equivalent, key selection criteria include ECL logic compatibility, industrial temperature range (–25°C to +85°C), ceramic DIP package (Q-28), 20 ns transient response settling time, and guaranteed no missing codes performance - all critical for high-fidelity signal acquisition in RF and instrumentation designs.

Technical Context

The AD9023BQ implements a three-pass subranging architecture with digital error correction, enabling 12-bit accuracy at 20 MSPS while maintaining low power dissipation (1.5 W). Its internal T/H features 110 MHz bandwidth and optimized dynamic linearity for analog inputs above Nyquist, supporting undersampling up to 70 MHz when paired with external Samplifier™ devices like the AD9100.

All timing is generated internally; conversion initiates on the rising edge of the ENCODE signal (Pin 8), with output data available after two pipeline delays plus propagation delay (t_OD = 8.5–19.5 ns typical). Aperture uncertainty is tightly controlled at 5 ps rms, and minimum encode pulse width is specified at 22.5 ns to preserve SNR and SFDR performance.

Key Specifications

Pinout & Package

AD9023BQ is supplied in a 28-pin ceramic dual in-line package (Ceramic DIP, Q-28) with through-hole mounting and hermetic sealing for industrial reliability. Package dimensions: 0.620 × 0.225 inches (15.75 × 5.72 mm), 0.110 inch lead pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed ADC applications.

Compared with AD9022BQ and ADS830IPW, the AD9023BQ uniquely combines ECL-level timing robustness, integrated T/H/reference, and 12-bit linearity - making it irreplaceable in demanding undersampling architectures where jitter immunity and spectral purity are non-negotiable.

Availability

AD9023BQ is available at Aetrix Electronics and suitable for radar receivers, digital communications infrastructure, medical ultrasound systems, and high-precision digital instrumentation requiring stable component supply across extended industrial temperature ranges.

Supply support for AD9023BQ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, serving industrial, automotive, communications, and healthcare markets since 1965.

The AD9023BQ belongs to Analog Devices' high-speed precision ADC product line, engineered specifically for undersampling and IF-digitization applications where wide analog bandwidth, low jitter, and guaranteed monotonicity are essential.

FAQ

What is the operating temperature range for the AD9023BQ?

The AD9023BQ is specified for industrial operation from –25°C to +85°C. This range is confirmed in the Ordering Guide and Absolute Maximum Ratings table, and applies to both the AD9023AQ/AZ and AD9023BQ/BZ variants. The "B" grade denotes tighter DC accuracy (±2.0 LSB INL) over this full temperature span, unlike the "A" grade which specifies performance only at +25°C.

Does the AD9023BQ require external reference or track-and-hold components?

No, the AD9023BQ integrates both a stable ±1.024 V reference and a high-bandwidth track-and-hold amplifier on-die. This eliminates the need for external reference ICs or discrete T/H circuits, reducing system complexity and layout sensitivity. The internal T/H has 110 MHz bandwidth and 20 ns settling time, sufficient for most IF sampling applications up to 70 MHz when used with external Samplifier™ devices.

What are the power supply requirements for the AD9023BQ?

The AD9023BQ requires two supplies: +5 V (±5%) on Pins 10/14/26 and –5.2 V (±5%) on Pins 13/15/27. Total power dissipation is 1.5 W typical. Each supply pin must be individually bypassed with a 0.1 µF ceramic capacitor to GND, and the COMP pin (17) must connect directly to –VS (Pin 15) via another 0.1 µF capacitor placed within 2 mm for stability.

Can the AD9023BQ be used with CMOS or TTL logic systems?

The AD9023BQ features ECL-compatible digital I/O only (logic "1" = –1.1 V, logic "0" = –1.5 V), and is not directly compatible with standard CMOS or TTL logic. Interfacing requires ECL-level drivers/receivers or level-shifting circuitry. For TTL/CMOS systems, the pin-compatible AD9022BQ - same architecture but TTL I/O - is the recommended alternative.

Is the AD9023BQ susceptible to ESD damage, and how should it be handled?

Yes, the AD9023BQ is an ESD-sensitive device rated to 4000 V HBM. Although it includes proprietary on-chip ESD protection, exposure to high-energy discharges can cause permanent functional degradation. Proper handling requires grounded workstations, anti-static mats, wrist straps, and conductive packaging - especially during PCB assembly and rework.